Arzumanian V, Barkhudaryan R, Eigen S, Nersessian A. Arshag Hajian: By the 85th Anniversary. Armen.J.Math. [Internet]. 2015 Dec. 10 [cited 2025 Apr. 26];7(2):80-4. Available from: https://armjmath.sci.am/index.php/ajm/article/view/113